Press.



N0. 791,410- v PATENTED MAY 30, 1905. W. J. H.UFETTERS.

PRESS. APPLIOATION vFILED SEPT. a, 1904. l

3 SHEETS-SHEET 1.

Ffa I.

PATBNTED MAY so, 1905.

W. LH. FETTERS.

PRESS.

APPLIUATION FILED SEPT. a. 1904.

3 SHEETS-SHEET 2.

WITNESSES:

15.791,410. PATENTED MAY3o,1905.

y W. J. H. FETTBRS.

PRESS. APPLIUATION :FILED SEPT. 3| 1904.-.

3 SHEETS-SHEET 3.

FIG-:M

`WITNESSES. iNvENTom UNITED STATE-s Patented May 30, 1905.

PATENT OFFICE.

PRESS- ,SPECIFICATION forming part of Letters Patent N0. 791,410, dated May 30, 14905. Application filed September 3, 1904. Serial No. 223,182.

To all whom it nfl/ty concern.:

Be it known that I, WILBUR J. H. FETTERs, of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Presses, whereof the following is a specification, reference being had to the accompanying drawings.

f My improvements may be employed with particular advantage in connection with machines for pressing glass, as hereinafter described; but it is to be understood that the use of my invention is not necessarily limited to such presses. f

It is the object of my invention to provide means to differentially actuate by fluid-pressure two mold members, hereinafter termed the plunger and the follower, the former being capable of reciprocatory motion within the latter. For this purposeI mount in a single chamber in a cylinder-casing two pistons, which are respectively connected with said plunger and follower and concentrically disposed one within the other, the outer piston being arranged to be actuated by the fluid-pressure under control of a valve which determines the admission and emission of iiuid at the opposite ends of said cylinder. The inner piston-is arranged to reciprocate within the outer piston, -secluded from communication with the cylinder-chamber and arranged to be independently actuated by fluid-pressure conveniently admitted through the` rod ofthe outer piston, so that in accordance with the different areas of their pistons the follower and plunger are operated under different total pressures conveniently derived from the same initial pressure, and the follower and plunger are capable of advantageous lrelative movements,l as hereinafter described. I find it convenient to employ a spring connection between said follower and its piston, as hereinafter described, so that although the follower is positively shifted by the piston under iiuidpressure applied to the latter the follower is capable of yielding relativelyto the piston under pressure of said spring. l

My invention also provides means whereby a series of molds may be successively presented in operative relation with said plunger and follower and be emptied of the articles pressed therein. As hereinafter described, such means comprises a circular track extending in a plane at right angles to its axis eX- cept at one portion, which is inclined radially with respect thereto. A series of molds are arranged to traverse said track and provided with means to prevent their accidental displacement from normal relation, comprising brackets on the respective molds operatively engaging a rotary carrier concentrically disposed within said track, the connection between the molds and carrier being such as to insure their rotary traverse on said track in predetermined relation to each other, but permitting the molds to be tilted upon the inclined portion of thetrack to discharge the pressed articles.

My inventioncomprises the various novel features of construction and arrangement, hereinafter more definitely specified and claimed. f

In said drawings, Figure I is a central vertical sectional view of a -cylinder-casing and pistons constructed and varranged in accordance with my invention, the pistons being shown at the limit of their downward-pressing stroke in registry with a suitable mold.' Fig.

II is a sectional view taken on the line II II in Fig. I, showing said mechanism with the pistons at the limit of their upward idle stroke. Fig. III is a plan view of a series of molds in operative relation with a track and carrier. Fig. IV is a sectional view taken on the line IV IV in Fig. III. Fig. Vis a sectional view taken on the line V V in Fig. III.

Referring to Figs. I and II, the cylindercasing l is conveniently supported in stationary position by the housing 2, beingadjustably'secured thereon by the bolts 3 and provided with the heads 4 and 5, respectively secured bythe bolts 6 and 7. As shown in Fig. I, said casing l comprises the fluid-ports 8 and 9 at the respectively opposite ends of the cylinder-chamber l0, in communication with the ports l1 and l2 in the valve-chest 14C, adjoining the exhaust-port 16. Said chest 14 is provided with the fiuid-pressure-supply pipe 18, and the admission and emission of pressure and exhaust with respect to said valvevchest'and cylinder-chamber are controlled ICOv by the slide-valve 20, provided with thel operating-rod 21, extending through the stuffingbox 22 in said chest. Said casing 1 incloses in its chamber 10 the two pistons 25 and 26, the latter being inclosed in the chamber 28 in the piston 25, secluded from communication with said chamber 10. Said piston 25 is provided with the tubular rod 29, which extends through the stuiiing-box 30. Said rod is provided with the abutment 31, which is adjustable on the screw-thread 32 on said rod and is secured in adjusted position by the jam-nut 33. Said abutment 31 normally supports the yoke 34, connecting the upper extremities of the guide-rods 36, which extend through suitable bearings in the cylinder-heads 4 and 5, as shown in Fig. II, and carry the follower 38. The spring 40, encircling the piston-rod 29 above said yoke 34, presses upon the latter and the abutment 41, which latter, like the abutment 31, is adjustable upon said screw-thread 32 and provided with the jam-nut 42. It is to be understood that the above-described connections between the piston 25 and the follower 38 are such that said follower may be positively actuated by said piston under pressure of fluid admitted through said ports 8 and 9 in the cylinder-chamber 10; but said follower is capable of yielding relatively to said piston under pressure of said spring 40. The inner piston 26 is actuated by iiuidpressure admitted to the piston-chamber 28 through said rod 29, whose upper end is connected by the flexible conduit 45 with the branch 46 of said main supply-pipe 18. Said piston 26 is directly connected with the plunger 48 by the rod 49, which extends loosely through the tail-tube 51, carried by said piston 25, which tube extends through the stuffing-box 54 in the cylinder-head 5. It is to be understood that the portion of the chamber 28 beneath said head 26 is in communication with the atmosphere through the crevice between said rod 49 and the tail-tube 51. As shown in Figs. I and II, said follower 38 and plunger 48 are in operative relation with a mold 58, and, as shown in Fig. III, three of such molds 58 are mounted on the track 59 and each provided with flanged brackets 60 and 61 to embrace the track and prevent their accidental displacement. Each of said brackets 61 comprises a web 62, operatively engaged with a pair of lugs 63 on the rotary carrier 65, which latter is mounted to rotate within said track 59 upon the shaft 66 and which may be intermittently progressed at proper intervals by any suitable means.

As indicated in Figs. III and IV, the track 59 is supported by a series of four standards 68, 69, 70, and 71, and it is to be understood that the gather of glass 72 is introduced to the molds in the region of the standard 68, is pressed therein by the follower 38 and plunger 48 in registry with the standard 69, and the pressed article 7 3 is discharged from the mold between the standards and 71, where the region 74 of said track 59 is inclined radially with respect to its axis, as indicated in Figs. III and V.

The mechanism above described operates as follows: A mold 58 is presented beneath the follower 38 and plunger 48 while the latter are uplifted, as indicated in Fig. Il. '.lhe valve 2O is then shifted by the rod 21 to the position shown in Fig. I, thus admitting fluidpressure from the pipe 18 and port 8 to the cylinder-chamber 10 in the cylinder-casing 1 and simultaneously emitting fluid-pnessnre from beneath said piston 25 through the ports 9 and 12, valve 20, and exhaust-port 16, leading to the atmosphere, so that said piston 25 descends with the piston 26 and without relative movement of said pistons or of said follower 38 and plunger 48 until said follower is seated in the mold 58, as indicated in Fig. I, whereupon the pressure supplied to thc chamber 28 through the rod 29 shifts the plunger 48 relatively to the follower 38 from the position shown in Fig. II to the position shown in Fig. I, so as to press the gather 72 (indicated in Fig. II) and form thc coinpleted article 73, (indicated in Fig. I-that is to say, the pressure upon the piston 25 lirst seats the follower 38 in the mold 58, as shown in Fig. I, and thereafter draws the rod 29 of said piston 25 through the yoke 34 (which latter is in rigid relation with the follower, as indicated in Fig. II) until said piston reaches the lower limit of its stroke, and thus compresses the spring 40 to the extent indicated by the space between said yoke 34 and the abutment 31. (Shown in Fig. I.) Consequently although the plunger 48 is normally upheld (by the piston 25) above the lower surface of the follower 38, as indicated in Fig. II, the relative downward movement of the piston 25 with respect to the yoke 34 permits the pressure upon the piston 26 to lower the plunger 48 in the follower 38, as shown in Fig. I. The pressing operation bcingcompleted, as above described, the follower 38 and plunger 48 are caused to be uplifted from the mold 58 by raising the valve 20, so as to admit pressure through the port 9 and establish communication between the port 8 and the exhaust-port 16, as thereupon the pressure beneath the piston 25 uplifts the latter until it contacts with the piston 26, and said pistons then both continue to move upwardly in relatively stationary relation without movement of the follower 38 until the abutment 31 encounters the yoke 34, whereupon continued upward movement of the piston 25 and its rod 29 uplifts the follower 38 from its seat in the mold, restoring the parts to thc normal idle position. (Shown in Fig. Il.) In

this connection it may be again noted that although the fluid-pressure upon the respective pistons 25 and 26 is derived from the same source the pressure upon the piston 26 IOO llO

is continuous and continuously tends to shift the piston 26 to its lowermost position in the piston 25. l

It is to be understood that I do not desire to limit myself to the precise details of construction and arrangement herein shown and described, as it is obvious that various modifications may be made therein without departing from the essential featurespof my invention.

I claim- 1. In a press, the combination with a cylinder; of -a piston mounted to reciprocate in said cylinder; a tubular rod for said piston extending exterior to said cylinder; a mold member operatively connected with said rod; asecond piston in said cylinder, within said rst piston; a rod extending from said second piston exterior to said cylinder; a mold member carried by said rod; means to admit iiuidpressure to the interior of said rst pistonh to actuate said second piston', comprising said tubular rod and a conduit connected therewith, substantially as set forth.

2. In a press, the combination with a cylinder; of a piston mounted to reciprocate in said cylinder; a tubular rod for saidpiston extending exterior to said cylinder; a mold member operatively connected with said rod; a second piston inl said cylinder, Within said first piston; a rod extending from said second piston exterior to said cylinder; amoldmember carried by said rod; means to admit fluidpressure to the interior of said first piston, to actuate said second piston, comprising said tubular rod and a conduit connected'therewith; and, means to admit fluid-pressure to said cylinder to actuate said first piston independently of said second piston, substantially as set forth. l

3. In a press, the combination with a cylinder; of two pistons, arranged one Within the other in said cylinder; rods respectively connected with said pistons and extending through the respectively opposite ends of said cylinder; mold members respectively connected to said rods; and, means to admit fluidpressure to said inner piston, independently of said outer piston, substantially, as set forth.

4C. In a press, the combination with a cylinder; of two pistons arranged within each other in said cylinder; rods on the respective pistons extending exterior to said cylinder; mold members respectively carried by said rods; means to supply the outer piston with fluid-pressure; and, means to admit fluid-pressure to said inner piston, independently of said outer piston, substantially as set forth.

5. In a press, the combination with a plurality .of mold members having means to differentially reciprocate them; of a series of molds arranged to be successively presented in operative relation with said mold members; a complete circular track arranged to continuously support said molds and comprising an inclined portion, in traversing which the molds, are tilted; and, means to progress said molds on said track in definite relation, substantially as set forth.

6. In a press, the combination with a plurality of mold members having means to differentially reciprocate them; of a series of molds arranged to be successively presented in operative relation with said mold members; a complete circular track arranged to continuously support said molds and comprising an. inclined portion, in traversing which the molds are tilted; and, means to progress said molds on said track in definite relation, comprising a rotary carrier, substantially as set forth.

7 In a press, the combination with a cylinder provided with a plurality of pistons; of mold members respectively lconnected with said pistons; a series of molds arranged to be successively presented in operative relation with said mold members and having projections; a circular track arranged to support said molds and comprisingan inclined portion, in traversing which the molds are tilted; and, means to progress said molds on said track in definite relation, comprising a rotary carrier having peripheral recesses engaging said mold projections, substantially as set forth.

8. In a press, the combination with a plurality of mold members having means to differentially reciprocate them; of a series of molds arranged to be successively presented in operative relation with said mold members; a complete circular track arranged to continuously support said molds and comprising a radially-inclined portion, arranged to tilt said molds radially outward; and,means to progress said molds on said track in definite relation, substantially as set forth.

9. Ina press, the combination with a plurality of mold members having means to differentially reciprocate them; of a series of molds arranged tov be successively presented in operative relation with said mold members; a circular track arranged to support said molds and comprising means arranged to oscillate said molds radially with respect to said track ,during their traverse thereon; and, means to progress said molds on said track in. ,definite relation, substantially as set forth.

l0. In a press, the combination with a cylinder; of two pistons in said cylinder, arranged to reciprocate one within the other; mold members respectively connected with said pistons; a valve arranged to admit fluidpressure to said outer piston; and, means arranged to admit fluid-pressure to said inner piston, independently of said valve, substantially as set forth.

l1. In a press, the combination with a plunger and follower; of acylinder-casing inclosing a chamber; guide-rods for said follower extending above said cylinder; bearings for said rods carried by said cylinder-casing; a

IOO

yoke connecting the upper ends of said guiderods; a piston in said cylinder, inelosing a chamber; a tubular rod for said piston eX- tending through said yoke; an adjustable abutment on said rod below said yoke; a spring for said rod above said yoke; an adjustable abutment on said rod for said spring; a tailtube on said piston extending through the opposite end of said cylinder-easing; a seeond piston mounted within said first piston; a rod on said second piston extending through said tail-tube, in operative relation with said plunger; means arranged to supply fluidpressure to said cylinder-chamber to aetuate said outer piston; and, means, arranged to supply huid-presen re within said piston-chamber to aetuate said inner piston independently ot' said outer piston, substantially as set forth.

12. In a press, the combination with a mold plunger and follower; of a cylinder-easing inclosing a chamber; two pistons in said eylinder-chamber, one within the other, respectively eonneeted with said plunger and follower; means arranged to supply Huid-pressure and thereby reciprocate said plungers in differential relation, comprising a main supply-pipe; a valve controlling the admission of fluid from said pipe to the respectively opposite ends of said cylinder-ehamber; and a branch from said supply-pipe, leading to a Chamber in said outer piston, substantially as as set forth.

In testimony whereof l have hereunto signed my name, at Philadelphia, Pennsylvania, this 30th day of August, 1904.

ULBUR J. H. .FE'I'ITERS Vitnesses:

ARTHUR E. PAIGu, CLIFTON C. IlALLowmLL. 

